August 2026
Pilot launch with 100 large VAT-
August 2027
Mandatory e-invoicing for all remaining small and medium VAT-registered taxpayers.
February 2027
Mandatory e-invoicing for all large VAT-registered companies.
To be announced
Rollout for government institutions and entities.
Challenges Enterprises Face During e-Invoicing Implementation
Your ERP isn't enough, your service provider partner matters
Invoice Data Availability
Unavailability of the data which otherwise is not required as per VAT but required for e-invoicing
Lack of a single source of truth
Huge invoice data needs to be updated at a transaction level for B2B & B2G & later B2C reporting. Multiple data sources, including business systems, POS, ERPs, & excel
Data Validations
Data Compliance: Multiple field-level data validations | Business rule validations | Manpower dependency
Data Hosting options
Limited on-premise or private VM deployments available to enterprises
Sync with Local authorities
Near real-time & online reporting of transactions to the local authorities & ever-evolving mandates
Different providers for ASP, AP, SMPs
Multiple failure points due integrations with independent ASP, AP & SMP providers
Proposed e-Invoicing model in Oman
Oman intends to use a 5-corner (Peppol-style) model with accredited Service Providers (SPs) as intermediaries — invoices are validated, routed, and submitted via these SPs to OTA.
Ideal e-Invoicing architecture for 5-corner model: Oman
Our Accreditations
With tax authorities across the globe
PEPPOL
Certified solution provider
PEPPOL
Certified for Access Point & SMP in UAE
MOF
Pre-Approved UAE e-Invoice Solution Provider
FTA
recognized Muwafaq
FTA
Recognized VAT platform in UAE
ZATCA
Recognized e-Invoicing service provider
IMDA
Accredited Access Point in Singapore
BOSA
registered e-Invoice Compliant software in Belgium
HMRC
Recognized VAT platform in UK
GSP
Authorized by GSTN
IRP
Authorized by GSTN
MDEC
Certified solution provider
Frequently Asked Questions
The pilot (first wave) is expected to begin in August 2026 with ~100 large taxpayers.
Oman plans to adopt a 5-corner (Peppol) model where accredited SPs validate, route, and report invoices to OTA.
- B2B (Business-to-Business): Standardized invoices between businesses.
- B2G (Business-to-Government): E-invoices for business transactions with government entities.
- G2B (Government-to-Business): Invoices from government entities to businesses.
- B2C (Business-to-Consumer): E-invoices for consumer transactions, particularly for simplified invoices.
e-Invoices should be generated in XML or PDF/A-3 format and transmitted using API connectivity.
Yes, one can generate a debit or credit note instead.
Yes, penalties will be applied according to the regulations with a grace period before enforcement.
Invoices will be archived for 10 years (5 years in the system + 5 years in an electronic archive)
The Oman e-Invoicing solution enables VAT-registered businesses to comply with OTA’s mandate by issuing, validating, and reporting invoices electronically through accredited service providers.
Look for OTA accreditation readiness, Peppol/5-corner expertise, integration capabilities, SLAs, regional presence.